APA Style
The Khalifah: Abu Bakar-Umar, Utsman-Ali. ().
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Chicago Style
The Khalifah: Abu Bakar-Umar, Utsman-Ali.
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,
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Text.
MLA Style
The Khalifah: Abu Bakar-Umar, Utsman-Ali.
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,
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Text.
Turabian Style
The Khalifah: Abu Bakar-Umar, Utsman-Ali.
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,
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Print.